Posted by L.C. on November 17, 1997 at 23:58:44:
Why are there so few craters on the maria?
Why is Mercury so difficult to observe?
When is the best time to observe Mars from Earth?
What is the current knowledge concerning life on Mars?
HOw do astronomers detect the presence of a magnetic field
in hot gases, such as those in the solar photosphere?
Please help! I can't answer these questions from the book.
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